From: "Yann Régis-Gianas" <yann@lrde.epita.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] sorting Hashtbl.t
Date: Mon, 12 Aug 2002 12:10:21 +0200 [thread overview]
Message-ID: <20020812101020.GV6002@barcelona.lrde.epita.fr> (raw)
In-Reply-To: <200208120108.VAA16373@dewberry.cc.columbia.edu>
On Sun, Aug 11, 2002 at 09:08:24PM -0400, Oleg wrote:
> Hi
Hi,
> Is there any way to sort Hashtlb.t or otherwise make Hashtbl.iter iterate
> elements in order [1]?
>
From an algorithmic point of view, there is no way to sort an
hash table since there is no order attached to items. Indeed, the
association is done through hash function that gives a fast-computable
signature to each key to find them quickly. (Re-)read the Cormen's book
to understand why you can't ask for such a feature ...
Maybe you want Map.t that is an ordered associative structure ?
--
Yann Régis-Gianas.
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next prev parent reply other threads:[~2002-08-12 9:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-12 1:08 Oleg
2002-08-12 9:51 ` Nicolas Cannasse
2002-08-12 13:44 ` Oleg
2002-08-13 7:45 ` Igor I. Harzmann
2002-08-12 10:10 ` Yann Régis-Gianas [this message]
2002-08-14 22:16 ` John Max Skaller
2002-08-14 23:13 ` Alexander V.Voinov
2002-08-15 16:43 ` Brian Rogoff
2002-08-16 17:47 Brian Rogoff
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